Physics I NEED HELP WITH EQUATIONS

A 7kg block is pulled at a constant velocity by a horizontal 25 N force
- Calculate normal & gravitational forces
- Calculate the applied & frictional forces
- Calculate the coefficient of friction

CAN SOMEONE PLEASE HELP ME WITH THE EQUATIONS FOR ALL OF THESE THINGS?

  1. 👍 0
  2. 👎 0
  3. 👁 147
asked by Jamika
  1. Assuming the block is on a horizontal surface.

    Vertically (y):
    Gravitational force = mg
    normal reaction, N = mg
    (N is reaction required to remain in equilibrium)

    Horizontally (x):
    Since block moves with constant velocity, it is in dynamic equilibrium, so for equilibrium,
    applied force = frictional forces
    Applied force = 25N
    frictional force = μkN

    These are the necessary equations to find the required values.

    1. 👍 0
    2. 👎 0
    posted by MathMate
  2. So Fg and Fn would be the same?

    1. 👍 0
    2. 👎 0
    posted by Jamika

Respond to this Question

First Name

Your Response

Similar Questions

  1. physics

    A block is pulled to the right across a alevel surface at a constant velocity of a horizontal force of 16 newtons. what is the coefficient of kinetic friction between the block and the surface?

    asked by Jen on May 24, 2012
  2. physics

    A 180 kg block is pulled at a constant speed of 8.3 m/s across a horizontal floor by an applied force of 135 N directed 15° above the horizontal. What is the rate at which the force does work on the block?

    asked by ghias on October 28, 2010
  3. Physics

    A 70 kg block is pulled at a constant speed of 6.4 m/s across a horizontal floor by an applied force of 102 N directed 37° above the horizontal. What is the rate at which the force does work on the block?

    asked by Maja on October 17, 2011
  4. Physics

    A 70 kg block is pulled at a constant speed of 6.4 m/s across a horizontal floor by an applied force of 102 N directed 37° above the horizontal. What is the rate at which the force does work on the block?

    asked by Maja on October 17, 2011
  5. Physics

    A 70 kg block is pulled at a constant speed of 6.4 m/s across a horizontal floor by an applied force of 102 N directed 37° above the horizontal. What is the rate at which the force does work on the block?

    asked by Maja on October 17, 2011
  1. Physics

    A block of mass m is pulled across a level surface by a rope that makes an angle θ with the horizontal. The coefficient of friction is μ. (a) Determine the amount of force F required to slide the block at a constant velocity.

    asked by Liz on December 3, 2014
  2. PHYSICS

    A -kg block is initially at rest on a frictionless horizontal surface. It is pulled with a constant horizontal force N. How long must it be pulled before its speed is m/s? t pull =

    asked by cristy on February 23, 2014
  3. physics

    A -kg block is initially at rest on a frictionless horizontal surface. It is pulled with a constant horizontal force N. How long must it be pulled before its speed is m/s? t_{pull} =

    asked by sean on February 21, 2014
  4. Physics

    A block rests on a horizontal, frictionless surface. A string is attached to the block, and is pulled with a force of 45.0 N at an angle è above the horizontal, as shown in Figure 7-23. After the block is pulled through a

    asked by Anna on March 1, 2012
  5. Physics

    A block rests on a horizontal, frictionless surface. A string is attached to the block, and is pulled with a force of 45.0 N at an angle è above the horizontal, as shown in Figure 7-23. After the block is pulled through a

    asked by Anna on March 1, 2012

More Similar Questions